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Fresh off wrapping the fourth season of HBO's "Girls," Allison Williams has begun her flight training for the role of Peter Pan in NBC's highly anticipated "Peter Pan Live!" special, set to air later this year. And she invited her fans to come along to her first flying session by posting a video on Instagram, which included a touching tribute to Robin Williams.

"First day of flying lessons for Pan," the "Girls" star wrote. "Thinking about and missing a hero of mine who once did this and left big shoes to fill."

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Robin Williams played the grown-up version of Peter Pan in the beloved 1991 film "Hook." The iconic comedian, 63, was found dead in his home Monday.

After her casting was announced, Allison Williams revealed she's wanted to take on the role of Peter Pan since she was three years old. "This is a dream come true," she said, later posting an adorable picture of herself dressed up as the character when she was younger.

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She then said how excited she was to head to Neverland and perform live, joking, "What could go wrong in a live televised production with simultaneous flying, sword fighting and singing?"

Joining Allison Williams for the network's follow-up to last year's successful Sound of Music Live! production is Christopher Walken, who is taking on the role on Captain Hook, and Christian Borle, with the "Smash" star pulling double duty as Smee and Mr. Darling.